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Question

Which of the following complexes will have a tetrahedral shape?

A
[PdCl4]2
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B
[Pd(CN)4]2
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C
[Ni(CN)4]2
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D
[NiCl4]2
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Solution

The correct option is D [NiCl4]2
In case of 3d series, central metal atom of C.N. 4
has tetrahedral shape for weak field ligands & square planar for strong field ligands.
For Pd both ligands act as strong field.
[NiCl4]2= Cl Weak field ligand.
Ni2+[Ar]3d8
As the ligand is weak field ligands the complex has tetrahedral geometry of sp3 hybridization.

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